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The sum of a rational and an irrational number is:

ANatural
BIrrational
CRational
DIntegral
Answer & Solution
Correct answer: B. Irrational
1. 5 minus root 3 is an example. 2. If it were rational, root 3 would be too. 3. So the sum is irrational. _Source: syllabus Mathematics, Chapter 1, Real Numbers._
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